A5019218921- Terahertz technology and applications
- Spectroscopy and Laser Applications
- Spectroscopy and Quantum Chemical Studies
- Advanced Chemical Sensor Technologies
- Acoustic Wave Resonator Technologies
- Photonic and Optical Devices
- Photonic Crystals and Applications
- Atmospheric and Environmental Gas Dynamics
- Mineralogy and Gemology Studies
- Molecular Junctions and Nanostructures
- Hydrocarbon exploration and reservoir analysis
- Plant and animal studies
- Allergic Rhinitis and Sensitization
- Nanowire Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Analytical Chemistry and Chromatography
- Semiconductor materials and interfaces
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- MXene and MAX Phase Materials
- Chemical Thermodynamics and Molecular Structure
- Atmospheric aerosols and clouds
- Advanced Chemical Physics Studies
- Geochemistry and Geologic Mapping
- Superconducting and THz Device Technology
China University of Petroleum, Beijing
2011-2021
University at Buffalo, State University of New York
2019
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2015
Techniques for scaling-up the direct-current (dc) triboelectricity generation in MoS2 multilayer-based Schottky nanocontacts are vital exploiting nanoscale phenomenon real-world applications of energy harvesting and sensing. Here, we show that dc output can be realized by using various heterojunctions including metal/semiconductor (MS), metal/insulator (tens nanometers)/semiconductor (MIS), semiconductor/insulator (a few (SIS) moving structures. It is shown tribo-excited energetic charge...
Abstract Although tip‐enhanced tribo‐tunneling in metal/semiconductor point nanocontact is capable of producing DC with high current density, scaling up the process for power harvesting practical applications challenging due to complexity tip array fabrication and insufficient voltage output. Here, it demonstrated that mechanical contact between a carbon aerogel silicon (SiO 2 /Si) interface naturally forms multiple nanocontacts generation an open‐circuit output ( V OC ) reaching V,...
It is vital to characterize the adsorption dynamics in oil–gas reservoirs and pollution control industry.
The optical properties of four kinds lubricating greases (urea, lithium, extreme pressure molybdenum disulfide lithium greases) with different NLGL (National Lubricant Grease Institute America) numbers were investigated using terahertz time-domain spectroscopy. Greases grades have unique spectral features in the range. Comparison experimental data predictions based on Lorentz—Lorenz theory exhibited that refractive indices each kind grease dependent their consistency. In addition, (MoS2) as...
Carbonate-rich rocks cover a primary part of the earth's petroleum geology reservoir. The study carbonate has special significance and more effective methods are now needed. In order to improve availability rock detection, terahertz (THz) spectroscopy was employed investigate relevant materials in Na2CO3 + CaCl2 = CaCO3 2NaCl, which is often used generate CaCO3. By comparing composited with different ions, it can be revealed that Ca2+, CO32−, Na+ Cl- have respective absorption features at...
To accurately reflect the physical properties of reservoir, it is necessary to use a variety techniques evaluate due complexity reservoir. In this paper, oil dripped into rock simulate and transmission terahertz (THz) wave in reservoir were studied. The extinction coefficient was key parameter for comprehending mineral organic matter. higher frequency was, larger was. composed absorption scattering, which latter played more important role. results revealed THz rock, can help improving...
Understanding the geological units of a reservoir is essential to development and management resource. In this paper, drill cuttings from several depths an oilfield were studied using terahertz time domain spectroscopy (THz-TDS). Cluster analysis (CA) principal component (PCA) employed classify analyze cuttings. The clearly classified based on CA PCA methods, results in agreement with lithology. Moreover, calcite dolomite have stronger absorption THz pulse than any other minerals, PC1...
Optical assessment of oil shale using terahertz time-domain spectroscopy (THz-TDS) was carried out to study potential. Fischer assay testing employed obtain the yield specimens examine difference potential between samples from three regions: Beipiao, Barkol, and Huadian in China. Then, two types each area were prepared for optical tests results compared. The refractive index (n) at 0.2–1.2 THz derived; n decreased slowly with increasing frequency all despite oscillation pattern observed...
The particle sizes and porosities of simulated pore structures are probed by terahertz time-domain spectroscopy. A double-peak spectrum phenomenon is observed when the (THz) pulses illuminated a particle. amplitudes two peaks depend strongly monotonically on size porosity. model used to study phenomenon, computational results agreed with experimental measurements. These measurements indicate spectroscopic behaviors pores particles, suggesting that spectroscopy can be as noncontact probe
The study of fluid inclusion is an important tool and method in mineral evolution research. shape, number size inclusions halite crystals grown at different temperatures are can directly show the composition, temperature pressure ore-forming fluids. Terahertz time-domain spectroscopy (THz-TDS) has been used to probe individual rock, exhibiting spectral signals terahertz band. relationship between absorption coefficient exhibited nonlinear features frequencies, a fitted regression curve...
In this paper, the optical characteristics of crude oil samples from selected territories in Tuha field have been investigated with THz-TDS at room temperature nitrogen environment. The absorption coefficient and refraction index are calculated frequency range 0.20~2.5 THz. No distinct peak has found spectra, which may result complexity constitution water content. coefficients increase content wax different slopes, means intensity THz wave band increases enhanced density sample unaltered...
The frequency-dependent absorption characteristics of conventional diesel fuel have been researched in the spectral range 0.2–1.5 THz by terahertz time-domain spectroscopy (THz-TDS). coefficient increased monotonically with solidifying point diesel. A nonlinear regression model was established, and cold flow properties were presented quantitatively. results made prediction possible THz-TDS technology indicated bright future practical application.
Crude oil spills near oilfields, a continuous threat to the surrounding soil security and ecological environment, are attracting increased environmental monitoring protection. There is an urgent need improve existing methods for identifying pollution location quantifying amount. Recently, deep learning (DL) have shown strong ability extract information in many fields. As impact of exploration rises, development new artificial intelligence (AI) prediction models becomes all more important....
Through the FDTD simulation of transmittance in terahertz band split-ring resonator (SRR) with different opening shapes, we found a mean gap effect SRR during resonance and particular conduction phenomenon case very sharp edge split.